Method of building with concrete or the like and apparatus therefor



Sept. 13, 1927.

METHOD OF BUILDING WITH CONCRETE 0R THEQLIKE AND, APPARATUS THEREFOR.

Filed 00$. 6. 1 92s C. WESTPHAL ET AL Patented Sept. 13,1927.

j UNITED STATES PATENT OFFICE. anius'i mrar wnsrrnAL, or BERLIN-STE'GLI'IZ, .annnronann eninenn, or BERLIN,

' GERMANY. I

METHQD OF BUILDINGV WITH CONCRETE OR THE LIKE AND APPARATUS THEREFOR.

, Application filed October 6, 1925, Serial No, 60,867, and in Germany July 12,1924. 7

Y Thepresent invention relates to methods of As according to this method no ready prebuilding, in which the massesof mortar, or pared mixture of mortar liable to set is cont-he' like, are conveyed, under gaseous presveyed through the long pipe, it is obvious sure, through pipes to the place or point that no incrustation of the walls of the pipe where they are used, or where they are deconsequentupon premature setting, and no 55 posited, and set between suitable shutterstoppage of the pipes and therefore breakings." f I down in working can take place.

. The main object of the present invention is 1 .In the accompanying diagrammatic drawto preventthe cement and aggregate setting ing .is shown, by way of example, aprev10 in the conveying pipes, and a further object ferred constructional form of an apparatus 60 is to accomplish the delivery of the cement embodying the present invention.

and aggregate ready for setting in the Figs. 1 and 2 show this apparatus in genshortest spaceof time byeliminating the preeral view and with the placewhere the morvious act of moistening the additional subtar is delivered at both low and high levels.

stances, though at :the same time supplying On altravelling framework 1 is mounted a 6 the necessary moisture. 4. ,7 frame 15, 16 in which is carried a pipe sys- Another object is to arrange the admixture tem including the conveyor pipe 13 adapted of the cement with the damp aggregate SO to be' moved on rollers 1 1.' The receptacle 4 that setting cannot occur until the mortar so for the binding agent, the lime or cement,

20 formed is delivered in desired posit-ion. 'may also be conveniently mounted on-this 70 Another object is to assure delivery of the travelling frame 1. Fromthereceptacle 4a cement and aggregatebetween the shutterpipe 5 leads to the conveyor pipe 13, into ing boards irrespective of the thickness of which it projects by a mouthpiece 6. The the wall being built. pipe 13 is carried on in a straight line after A process according to the present inventhe entrance of the binding agent pipe.

tion is characterized by the fact thatthe ad- This straight part 17 of the conveyor pipe ditional substances added to the mortar, 'which terminates in an interchangeable outsuch as sand, gravel, or slag, hereafter 'xlet nozzle, forms the mixing chamber, in

' termed aggregate, are conveyed to the which the moist aggregate combines with the place where they are to'be used in a moist dry binding agent.

state in a separate pipe fromthat used for The length of this mixing chamber (the the cement, by means of compressed air or portion 17 of the pipe) maybe any that may steam at a sufiiciently high pressure, while he desired, but it will conveniently be made the dry binding agent, such as lime, or cedependent on adequate mixing of the matement, is conveyed in a dry state to the addirials being ensured, so as to obtaina mortar. tional substances before it issues, or as it at the pointiof deliverywh'ich is ready for issues from this pipe, so that a mixture of use and capable of setting. The outlet nozmortar ready to set is deposited at the place zle 21 may also be longer or shorter as may where it is to be used. o v be required, according to the desired form 40 Whereas when compressed air is used as which the 'cone of the issuing mass of mortar the conveying medium the aggregate has to is to possess. Tothis outlet nozzle 21 is rebe moistened to a suitable degree prior to it movably atta hed a hopper-or funnel-shaped being mixed with the' binding agent, this vessel 18 called a spraying box. It is promoistening is not'required when steam is vided atthe lower end of its opening with 4 used. In this case, the aggregate takes up gripper arms 20 provided with anti-friction suificient moisture from the steam as it is rollers, or the like, which catch under the --being'conveyed; furthermore, the mixture is turned over upper edge of the shuttering iwa-rmed by the heat of the steam, so that a bars 19 and therefore support-them.

more complete and. more rapid setting there Into the'other-endof the conveyor pipe 13 paesjesat 12 a supply pipe 10 tier 1: Lepreesure so of is obtained.

Iii)

medium used for conveying the pressure me dium employed (compressed air or steam), being generated in an apparatus not shown in the drawing. The pressure medium flowing through the nozzle ll draws through the suction pipe 7 the aggregate lying on the floor, arries it upwards, and conveys it through the pipe 18 to the outlet nozzle 21. An arm 2 mounted on the travelling frame is provided with prongs 9 which loosen the heap of aggregate and bring it up to the suction pipe 7.

In the example shown, one and the same current of pressure medium is used both for drawing up and conveying the aggregate, and for delivering the binding agent from the receptacle +l through the pipe 5. Alter natively a separate second current of comressed air may be used for conveying the inciting agent tothe conveying pipe. lVith the described arrangement, the method would be carried out as follows The framework will be run slowly along the excavated building: trench, the additional materials such as the sand, gravel, or

slag, which are piled up along the line of rails being drawn in by means of the pressure medium and delitercd to the mixing chamber where the binding agent enters. The ready made mass of mortar issuing from the nozzle 21 deposits itself between the shuttering boards 19, which are held by the hopper 18 which travels alone the top of them. At the end of the shuttering the framework is reversed so that the edge 3 of the all gradually becomes higher by the layers of the mass of setting mortar deposited between the shuttering boards, which are suitably raised as the apparatus runs to and fro.

It obvioua that the apparatus used for carrying out the method herein described. may he constructcdof other ehapes, and may contain elen'ients which make the distance at which it acts, or its ange of ope ations, independent of the movability of the frame which carries them.

Vi e claim:

1, Method of building with concrete, consisting in separately delivering under gaseous pressure the aggregate in moist condition and cement in dry condition at the place Where bnil' ingj is in operation.

The method of building with concrete which consists in conveying and delivering to a mixing cl'iamher under pressure the aggregate in a moist condition and conveymg and delivering to the mixing chan'iber cement in a dry condition, and then depositin the mixture "from the niiuiini chamber in situ.

3. Method o't' building with concrete, consisting in separately delivering under pressure of steam, the aggregate and cement, to the place where building is in operation,

the steam moietening the aggregate so that a mass of concrete ready for use is deposited in the shortest space ot time.

-t. itp 'mratus for use in building with concrete, comprising in combination a system o't pipes for separate conveyance of the aggregate and cement, means for supplying gaseous pressure to the pipe system for delivery thcrethrouch ot the aggregate and cement. said pipe system being mounted for vertical and horizontal displacement, and means for ettectingsaid displacement.

5. Apparatus 't'or use in building with concrete, (".(JIHIJUlSlllg in combination a system of pipes tor separate conveyance of the aggregate and cement, means for supplying gaseous pressure to the pipe system for delivery therethrougrh ot the aggregate and cement, said pipe system being carried on a. travellin carriage, and means for displacing vertically said system on said carriage.

6. Appa "atus for use in building with concrete. comprising: the combination with a travelling carriage and a pipe system verticallv displaceahle thereon, of means for drawing the aggregate into the pipe system, a chamber terminattinj said system, an inlet for the content to said chan'iber, and an extension to said chamber, the cement being drawn into the chan'iber and the extension acting as a mixing chamber for cement and aggregate.

7. Apparatus for use in. building with concrete. comprising the combination with a travelling: carriage and a pipe system vertically displaccable thereon, of means for drawing the aggregate into the pipe system, a chamber terminating; said system, an inlet; for the cement to said cliamber, an extension to said chamber, the ctunent being drawn into the chamber and the extension acting as a mixing cl lamher for cementand aggregate. and a hopper on saidoxtension, and claw members on the lower part of said hopper for engaging the shuttering boards of the building.

Apparatus for use in building with corn crete coim irisinp; in combination with a travelling carriage, a conveyor pipe, a chamber near the inlet end thereof, an injector nozzle in said chamber, a pressure supply to said nozzle for drawing the aggregate into said pipe through the inlet end, a second chamber near the outlet end of the pipe, an inlet for dry cement in the second chamber, an extension thereto. the cement "being drawn into said second chamber, and falling into the extension which forms a mixing chamber for the cement and aggregate, and means for mechanically gathering the aggregate to the inlet end of said pipe.

9. An apparatus of the character described including, in, comhiiiation. a movable frame, a system of pipes supported on said frame communicating with a mixing chamber, said mixing chamber terminating in a nozzle and conduit connecting said receptacle with said a spraying box with which said nozzle compipe system adjacent said mixing chamber. municates, all adapted to deposit the mate- In testimony whereof they aflix theirlsig- 10 rial in situ, said system of pipes'being subnatures.

- jected to fluid pressure and "having an inlet end to receive the aggregate, a receptacle v RICHARD GRIEGER. for dry storage of the binding agent and a' CHE. WESTPHAL. 

